Implement Compatibility with Ruby 3.x

[erados]

Hello,

I've been following your blog posts and appreciate your insights. As I was exploring your repository, I encountered an issue related to Ruby version compatibility.

With the upcoming release of Ruby 3.3, I noticed that the repository might not be fully compatible with the latest Ruby 3.x versions. When attempting to run bundle install, I received the following error:

minitest-5.14.2 requires ruby version < 3.1, >= 2.2, which is incompatible with the current version, ruby 3.2.2p53

This seems to suggest a compatibility issue with the minitest version specified in the Gemfile and the newer Ruby versions.

Given that Ruby 3.3 is on the horizon, and I am currently using Ruby 3.2.2, addressing this could be beneficial for future-proofing the project.

Could we consider updating the minitest version or making other necessary adjustments to ensure compatibility with Ruby 3.2.2 and upcoming versions?

Thank you for your attention to this matter.